Valve.



J OBERMIRE & D. KROUS.

VALVE.

APPLIOATIONJILED NOV. 29, 1913.

1,098,963 Patented June 2,1914.

omen STATES PATENT orrion. i aoseren dismiss DANIEL- Ia centrisnesaasxe.

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v specification tr mmers meat Application med navemb'erga 191s. are; at.803,756.

PatentedJune 2 1914.

To all whom it may concern:

Be it known that we, JOSEPH O nRMinE and DANIEL Knous, citizens of theUnited States, residingat Catalpa, inthe county of Holt and State'ofNebraska, :have m vented new and useful Improvements Valves, of whichthe following is a spec1- fication.

The invention relates to tire valve attachments, and more particularlyto the class of pressure regulators for'pneumatic tires.

The primary object of the. invention is the provision of a regulatorwherein any excessive air pressure within a tire will be automaticallyrelieved when expanded by heat or otherwise,thereby relieving theinterior ,strain and preventing the bursting or tearing of the tire.

Another object of the invention isothe provision of a regulator whereinthe construction thereof is of novel form so that it can be readily andeasily attached to any valve stem of-an. automobile, bicycle, motorcycleor the like vehicle'tire of the pneumatic type, the air pressure in thelatter being maintained at a predetermined pounds pressure, and whichwill obviate the burstlator constructed in accordance with theinvention. Fig. 2 is a vertical longitudinal sectional view of the same.Fig. 3 is a sectional View on the line 3-3 of Fig. 1.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawing.

Referring to the drawing in detail, A designates a portion of apneumatic tire having the usual inner tube. from which projects thevalve stem B, and C the usual relief pin therein. On this valve stem 13is attached the regulator presently described. The regulator 7 comprisesa sleeve 5 formed at one end with external wrench engaging surfaces 6,while the remaining external portlon of the sleeve is provided withscrew threads 7 with which is detachably engaged a coiled retractilespring 8,

which is formed with an outer eye'terminal .9 encircling the outernipple end 10 of a valve plunger 11 which is located centrally withinthe spring 8, the eye terminal 9 bemg designed to rest against anannular shoulder 12 formed on the plunger 11, which is also formedspaced from the said shoulder with a beveled valve 13, thelatter-normally engaging a correspondingly beveled .valve seat 1 1formed in the outer end of the, sleeve 5, which has in its opposite endinternal screw threads 15 adapted for detachable engagement with theexternal screw threads 16 on the valve stem B for the mounting of thesleeve 5 thereon.

The plunger 11 is formed with a central bore 17 in which is fitted avalve rod 18 which is formed at one end with a valve head 19 adapted torest in a valve seat 20 formed in the inner end of the plunger 11, andalso adapted to contact with the relief pin 0 in the valve stem B so asto open the said stem when the regulator is mounted thereon,.whereby onthe attaching of the hose of a pump to the nipple 10 air may be forcedinto the inner tube of the tire A for the filling of the same. \Vhenexcessive pounds pressure of air is admitted to the inner tubepf thetire A the valve 13 will automatically unseat from its seat 14 against'theresistance of the spring 8 so that the said excessive air pressurewill be relieved therefrom, thereby obviating the bursting or tearing ofthe tire, and thus relieving interior strain.

It will be noted that the regulator will sustain a predetermined poundspressure within the tire and will automatically relieve air therefromwhen expanded by heat or other causes. The tire can be inflated in theusual manner without detaching the regulator.

From the foregoing it is thought that the' construction and manner ofoperation of the device will be clearly understood, and therefore a moreextended explanation has been omitted.

-What is claimed. is

X regulator for a pneumatic valve stem comprising. a sleeve having aninternal thread for detachable connection with the y stein and alsoprovided with an external thread, a coiled retraetile spring cletachablyengaging the external thread on the sleeve and t'orinetl with an eye atits outer free end, a centrally bored plunger having it nipple en lpassed through the eye of the spring, while its opposite end WorksWithin the sleeve, an external valve formed on the plunger for closing;the outer end of the 10 sleeve under the action of the spring, and avalve rod located Within the plunger for normally closing the boretherein and adapted to open the relief pin in the valve stem.

In testimony whereof We afiiX our signatures in presence of twoWitnesses. r

JOSEPH OBERMIRE. DANIEL KROUS. \Yitnesses LIZZIE DoNoHoE, J. A. DONOHOE.

